drm: bridge: mtk_dsi: Switch to devm_drm_of_get_bridge

devm_drm_of_get_bridge is capable of looking up the downstream
bridge and panel and trying to add a panel bridge if the panel
is found.

Replace explicit finding calls with devm_drm_of_get_bridge.

Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331154503.66054-3-jagan@amarulasolutions.com

diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index e91b3ff..1487cc3 100644 (file)
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1016,7 +1016,6 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 {
        struct mtk_dsi *dsi;
        struct device *dev = &pdev->dev;
-       struct drm_panel *panel;
        struct resource *regs;
        int irq_num;
        int ret;
@@ -1033,17 +1032,10 @@ static int mtk_dsi_probe(struct platform_device *pdev)
                return ret;
        }
 
-       ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
-                                         &panel, &dsi->next_bridge);
-       if (ret)
+       dsi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
+       if (IS_ERR(dsi->next_bridge)) {
+               ret = PTR_ERR(dsi->next_bridge);
                goto err_unregister_host;
-
-       if (panel) {
-               dsi->next_bridge = devm_drm_panel_bridge_add(dev, panel);
-               if (IS_ERR(dsi->next_bridge)) {
-                       ret = PTR_ERR(dsi->next_bridge);
-                       goto err_unregister_host;
-               }
        }
 
        dsi->driver_data = of_device_get_match_data(dev);